Police spokesman Craig T. Fifer said an officer was on routine patrol when he saw Sen. Crapo’s vehicle run a red light. It was stopped at Hume Avenue and Mount Vernon at 12:45 a.m.
Crapo then underwent several field sobriety tests, which he failed, Fifer said in a statement. He was then taken into custody without incident.
Sen. Crapo is one of four Republicans in the self-named “Gang of Eight” — a bipartisan group of senators who came together to work on a budget deal to avoid the upcoming “fiscal cliff.”